/* ===================================================
   FREE AI TOOLS DIRECTORY — MAIN STYLESHEET
   =================================================== */

:root {
  --primary: #6C63FF;
  --primary-dark: #5348e8;
  --primary-light: #a09cf7;
  --secondary: #FF6B6B;
  --accent: #43E97B;
  --accent2: #F7971E;
  --bg: #0D0E1A;
  --bg2: #13152A;
  --bg3: #1A1D35;
  --card-bg: #1E2140;
  --card-border: rgba(108,99,255,0.2);
  --text: #E8E9F5;
  --text-muted: #8B8FA8;
  --text-light: #ffffff;
  --badge-free: #43E97B;
  --badge-freemium: #F7971E;
  --badge-limited: #56CCF2;
  --badge-hot: #FF6B6B;
  --badge-new: #C471ED;
  --radius: 16px;
  --radius-sm: 8px;
  --shadow: 0 8px 32px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 24px rgba(108,99,255,0.3);
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --font-main: 'Inter', 'Noto Sans Bengali', sans-serif;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-main);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

a { text-decoration: none; color: inherit; }
img { display: block; }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg2); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 4px; }

/* ===== NAVBAR ===== */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(13,14,26,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(108,99,255,0.15);
  transition: var(--transition);
}

#navbar.scrolled {
  background: rgba(13,14,26,0.97);
  box-shadow: 0 4px 30px rgba(0,0,0,0.5);
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text-light);
}

.logo-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: white;
  box-shadow: 0 4px 12px rgba(108,99,255,0.4);
}

.logo-accent { color: var(--primary-light); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--text-light);
  background: rgba(108,99,255,0.15);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.nav-toggle:hover { background: rgba(108,99,255,0.15); }

.mobile-menu {
  display: none;
  flex-direction: column;
  background: var(--bg2);
  padding: 12px 24px;
  border-top: 1px solid rgba(108,99,255,0.1);
}
.mobile-menu a {
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  color: var(--text-muted);
  font-weight: 500;
  transition: var(--transition);
}
.mobile-menu a:hover { color: var(--text-light); }
.mobile-menu.open { display: flex; }

/* ===== HERO ===== */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 100px 24px 80px;
  overflow: hidden;
  text-align: center;
}

.hero-bg-blobs {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.2;
}

.blob-1 {
  width: 600px; height: 600px;
  background: var(--primary);
  top: -200px; left: -200px;
  animation: blobFloat 12s ease-in-out infinite alternate;
}
.blob-2 {
  width: 400px; height: 400px;
  background: var(--secondary);
  bottom: -100px; right: -100px;
  animation: blobFloat 15s ease-in-out infinite alternate-reverse;
}
.blob-3 {
  width: 300px; height: 300px;
  background: var(--accent);
  top: 50%; left: 60%;
  animation: blobFloat 10s ease-in-out infinite alternate;
}

@keyframes blobFloat {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(40px, 40px) scale(1.15); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(108,99,255,0.15);
  border: 1px solid rgba(108,99,255,0.35);
  border-radius: 50px;
  padding: 8px 20px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary-light);
  margin-bottom: 28px;
  animation: fadeInDown 0.6s ease both;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.1;
  color: var(--text-light);
  margin-bottom: 20px;
  animation: fadeInUp 0.7s ease both 0.1s;
  letter-spacing: -1px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary-light), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-muted);
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  animation: fadeInUp 0.7s ease both 0.2s;
}

/* Search */
.search-wrapper {
  animation: fadeInUp 0.7s ease both 0.3s;
  margin-bottom: 40px;
}

.search-box {
  position: relative;
  max-width: 600px;
  margin: 0 auto;
}

.search-box input {
  width: 100%;
  padding: 18px 56px;
  border-radius: 50px;
  background: rgba(255,255,255,0.06);
  border: 1.5px solid rgba(108,99,255,0.3);
  color: var(--text-light);
  font-size: 1rem;
  font-family: var(--font-main);
  outline: none;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

.search-box input::placeholder { color: var(--text-muted); }

.search-box input:focus {
  border-color: var(--primary);
  background: rgba(108,99,255,0.08);
  box-shadow: 0 0 0 4px rgba(108,99,255,0.15), var(--shadow-glow);
}

.search-icon {
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 1rem;
  pointer-events: none;
}

.search-clear {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.08);
  border: none;
  color: var(--text-muted);
  width: 28px; height: 28px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 0.75rem;
  transition: var(--transition);
  display: none;
  align-items: center;
  justify-content: center;
}
.search-clear.visible { display: flex; }
.search-clear:hover { background: rgba(255,107,107,0.2); color: var(--secondary); }

/* Stats */
.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  animation: fadeInUp 0.7s ease both 0.4s;
}

.stat { text-align: center; }
.stat-num {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary-light), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.1);
}

.hero-scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-muted);
  font-size: 1.2rem;
  animation: bounceDown 2s ease-in-out infinite;
}

@keyframes bounceDown {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ===== LEGEND ===== */
#legend {
  background: var(--bg2);
  padding: 16px 0;
  border-top: 1px solid rgba(255,255,255,0.05);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.legend-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.legend-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.legend-badge {
  padding: 4px 14px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
}

.badge-free { background: rgba(67,233,123,0.15); color: var(--badge-free); border: 1px solid rgba(67,233,123,0.3); }
.badge-freemium { background: rgba(247,151,30,0.15); color: var(--badge-freemium); border: 1px solid rgba(247,151,30,0.3); }
.badge-limited { background: rgba(86,204,242,0.15); color: var(--badge-limited); border: 1px solid rgba(86,204,242,0.3); }
.badge-hot { background: rgba(255,107,107,0.15); color: var(--badge-hot); border: 1px solid rgba(255,107,107,0.3); }
.badge-new { background: rgba(196,113,237,0.15); color: var(--badge-new); border: 1px solid rgba(196,113,237,0.3); }

/* ===== SECTION COMMON ===== */
section { padding: 80px 0; }

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--text-light);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.section-title i { color: var(--primary); }

.section-sub {
  font-size: 1rem;
  color: var(--text-muted);
}

/* ===== CATEGORY FILTERS ===== */
#categories { background: var(--bg); padding: 60px 0; }

.filter-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.filter-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 50px;
  border: 1.5px solid rgba(255,255,255,0.1);
  background: rgba(255,255,255,0.04);
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-main);
}

.filter-btn:hover {
  border-color: rgba(108,99,255,0.4);
  background: rgba(108,99,255,0.1);
  color: var(--text-light);
  transform: translateY(-2px);
}

.filter-btn.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-color: transparent;
  color: white;
  box-shadow: 0 4px 20px rgba(108,99,255,0.4);
}

.filter-count {
  background: rgba(255,255,255,0.15);
  border-radius: 50px;
  padding: 2px 8px;
  font-size: 0.75rem;
  font-weight: 700;
}

.filter-btn.active .filter-count {
  background: rgba(255,255,255,0.25);
}

/* ===== FEATURED ===== */
#featured { background: var(--bg2); }

.featured-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.featured-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  border: 1px solid var(--card-border);
  padding: 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.featured-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: var(--radius) var(--radius) 0 0;
}

.featured-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow), var(--shadow-glow);
  border-color: rgba(108,99,255,0.4);
}

.featured-card-header {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 16px;
}

.tool-logo {
  width: 52px; height: 52px;
  border-radius: 14px;
  background: var(--bg3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.08);
}

.tool-logo img {
  width: 32px; height: 32px;
  object-fit: contain;
}

.featured-card-meta { flex: 1; min-width: 0; }

.featured-card-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-light);
  margin-bottom: 6px;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.badge {
  padding: 3px 10px;
  border-radius: 50px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.badge.free { background: rgba(67,233,123,0.15); color: var(--badge-free); }
.badge.freemium { background: rgba(247,151,30,0.15); color: var(--badge-freemium); }
.badge.limited { background: rgba(86,204,242,0.15); color: var(--badge-limited); }
.badge.hot { background: rgba(255,107,107,0.15); color: var(--badge-hot); }
.badge.new { background: rgba(196,113,237,0.15); color: var(--badge-new); }

.featured-card-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.featured-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.cat-tag {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

.btn-visit {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 50px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  font-size: 0.82rem;
  font-weight: 600;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  font-family: var(--font-main);
}
.btn-visit:hover {
  box-shadow: 0 6px 20px rgba(108,99,255,0.4);
  transform: translateY(-2px);
}

/* ===== TOOLS GRID ===== */
#tools-grid { background: var(--bg); }

.tools-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
  flex-wrap: wrap;
  gap: 16px;
}

.tools-header .section-title {
  margin-bottom: 0;
  font-size: 1.6rem;
}

.tools-sort {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
}

.tools-sort select {
  background: var(--card-bg);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  font-size: 0.875rem;
  cursor: pointer;
  outline: none;
  font-family: var(--font-main);
  transition: var(--transition);
}
.tools-sort select:hover, .tools-sort select:focus {
  border-color: var(--primary);
}

.tools-grid-layout {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

/* Tool Card */
.tool-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.06);
  padding: 24px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 12px;
  animation: fadeInUp 0.4s ease both;
}

.tool-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(108,99,255,0.3);
}

.tool-card-header {
  display: flex;
  align-items: center;
  gap: 14px;
}

.tool-card-info { flex: 1; min-width: 0; }

.tool-card-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-light);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tool-card-cat {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 2px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.tool-card-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tool-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding-top: 8px;
  border-top: 1px solid rgba(255,255,255,0.05);
}

.tool-free-info {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.btn-visit-sm {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 14px;
  border-radius: 50px;
  background: rgba(108,99,255,0.15);
  border: 1px solid rgba(108,99,255,0.3);
  color: var(--primary-light);
  font-size: 0.8rem;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  font-family: var(--font-main);
}
.btn-visit-sm:hover {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  border-color: transparent;
}

/* No results */
.no-results {
  text-align: center;
  padding: 80px 24px;
  color: var(--text-muted);
}
.no-results i { font-size: 3rem; margin-bottom: 16px; display: block; }
.no-results p { font-size: 1.1rem; margin-bottom: 20px; }
.btn-reset {
  padding: 10px 24px;
  border-radius: 50px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  border: none;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-main);
}
.btn-reset:hover { box-shadow: 0 6px 20px rgba(108,99,255,0.4); }

/* Load More */
.load-more-wrap { text-align: center; margin-top: 40px; }
.btn-load-more {
  padding: 14px 36px;
  border-radius: 50px;
  background: transparent;
  border: 1.5px solid rgba(108,99,255,0.4);
  color: var(--primary-light);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-main);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-load-more:hover {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-color: transparent;
  color: white;
  box-shadow: 0 6px 20px rgba(108,99,255,0.4);
}

.hidden { display: none !important; }

/* ===== COMPARISON TABLE ===== */
#comparison { background: var(--bg2); }

.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.06);
  box-shadow: var(--shadow);
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  min-width: 700px;
}

.compare-table thead {
  background: linear-gradient(135deg, rgba(108,99,255,0.2), rgba(108,99,255,0.05));
}

.compare-table th {
  padding: 16px 20px;
  text-align: left;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--primary-light);
  white-space: nowrap;
}

.compare-table td {
  padding: 16px 20px;
  color: var(--text);
  border-bottom: 1px solid rgba(255,255,255,0.04);
  vertical-align: middle;
}

.compare-table tbody tr {
  background: var(--card-bg);
  transition: var(--transition);
}

.compare-table tbody tr:hover {
  background: rgba(108,99,255,0.06);
}

.tool-name-cell {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--text-light);
  white-space: nowrap;
}

.favicon {
  width: 20px; height: 20px;
  border-radius: 4px;
  flex-shrink: 0;
}

.badge-pill {
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.77rem;
  font-weight: 700;
  white-space: nowrap;
}
.badge-pill.free { background: rgba(67,233,123,0.15); color: var(--badge-free); }
.badge-pill.freemium { background: rgba(247,151,30,0.15); color: var(--badge-freemium); }
.badge-pill.limited { background: rgba(86,204,242,0.15); color: var(--badge-limited); }

.table-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px; height: 32px;
  border-radius: var(--radius-sm);
  background: rgba(108,99,255,0.15);
  color: var(--primary-light);
  transition: var(--transition);
}
.table-link:hover {
  background: var(--primary);
  color: white;
}

/* ===== FAQ ===== */
#faq { background: var(--bg); }

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--card-bg);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: rgba(108,99,255,0.25); }

.faq-q {
  width: 100%;
  padding: 20px 24px;
  background: none;
  border: none;
  color: var(--text-light);
  font-size: 0.95rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-family: var(--font-main);
  transition: var(--transition);
}

.faq-q:hover { color: var(--primary-light); }
.faq-q i { transition: transform 0.3s ease; color: var(--text-muted); flex-shrink: 0; }
.faq-item.open .faq-q i { transform: rotate(180deg); color: var(--primary); }

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}

.faq-a p {
  padding: 0 24px 20px;
  color: var(--text-muted);
  line-height: 1.7;
  font-size: 0.9rem;
}

.faq-item.open .faq-a { max-height: 300px; }

/* ===== FOOTER ===== */
#footer {
  background: var(--bg2);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 60px 0 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 2fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .logo-text {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.footer-tagline {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 8px;
}

.footer-cats h4, .footer-note h4 {
  color: var(--text-light);
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}

.footer-cats {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer-cats a {
  color: var(--text-muted);
  font-size: 0.875rem;
  transition: var(--transition);
  cursor: pointer;
}
.footer-cats a:hover { color: var(--primary-light); padding-left: 4px; }

.footer-note p {
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.7;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 24px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.82rem;
}

/* ===== SCROLL TOP ===== */
.scroll-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  border: none;
  cursor: pointer;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(108,99,255,0.4);
  transition: var(--transition);
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  z-index: 999;
}

.scroll-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}

.scroll-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 28px rgba(108,99,255,0.5);
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-note { grid-column: 1 / -1; }
}

@media (max-width: 680px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  #hero { padding: 80px 16px 60px; }
  .hero-stats { gap: 20px; }
  .stat-divider { display: none; }
  .featured-grid { grid-template-columns: 1fr; }
  .tools-grid-layout { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .tools-header { flex-direction: column; align-items: flex-start; }
  section { padding: 56px 0; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 2rem; }
  .filter-btn { padding: 10px 16px; font-size: 0.82rem; }
  .scroll-top { bottom: 20px; right: 20px; }
}